Interferon treatment for hepatitis B generally costs from $30,000 to $50,000 a year. There are two main types of hepatitis B long-acting interferon, domestic and imported, and the specifications can vary, which leads to differences in price. Generally, imported long-acting interferon costs $700 to $1,000 per injection, and domestically produced ones cost $600 to $900 per injection. On average, patients have to take one injection per week, so the cost is usually 30,000 to 50,000 yuan a year. Interferon is a glycoprotein with anti-viral, immune response regulating and anti-tumor effects. It is indicated for leukemia, kidney cancer, melanoma, viral hepatitis C, chronic active hepatitis B, and so on. Its injection may have adverse reactions such as fever, headache, fatigue, decrease in white blood cell count, and increase in transaminases. The use of interferon for the treatment of hepatitis B should be under the guidance of a doctor, and the specific cost can be consulted at the local hospital.